Definition of Musculus serratus anterior
1. Noun. Muscles that rotate the scapula and elevate the rib cage.
Medical Definition of Musculus serratus anterior
Origin, from centre of lateral aspect of first eight to nine ribs; insertion, superior and inferior angles and intervening medial margin of scapula; action, rotates scapula and pulls it forward, elevates ribs; nerve supply, long thoracic from brachial plexus.
Synonym: musculus serratus anterior, anterior serratus muscle, costoscapularis, musculus serratus magnus.
(05 Mar 2000)
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